What is the quadratic formula of 0=10x^2 + 9x-1?

2 Answers
Apr 25, 2018

(-9+-sqrt(81-4(10)(-1)))/20

Explanation:

The equation given is in ax^2+bx+c form. The general form for the quadratic formula of an unfactorable equation is:
(-b+-sqrt(b^2-4(a)(c)))/(2a)
just take the terms and plug them in, you should get the correct answer.

Apr 25, 2018

x=(-9+-sqrt(9^2-4(10)(-1)))/(2(10))

Explanation:

The Quadratic Formula is x=(-b+-sqrt(b^2-4ac))/(2a)

The equation 10x^2+9x-1 is in standard form, which is ax^2+bx+c. We can replace the letters in the quadratic formula with the letters from the equation.

x=(-9+-sqrt(9^2-4(10)(-1)))/(2(10))